Operation Section
65
Table 2. MI-07 Diagnostic Fault Codes (Flash Codes) cont’d.
DFC
PROBABLE FAULT
FAULT ACTION *
CORRECTIVE ACTION FIRST CHECK
161
(16)
ECTOverTempFault
Engine coolant temperature is
high. The sensor has
measured an excessive
coolant temperature typically
due to the engine overheating.
(1) TurnOnMil
(2) DelayedEngine
Shutdown
(3) CheckEngineLight
Check coolant system for radiator
blockage, proper coolant level and for
leaks in the system.
Possible ECT short to GND, check ECT
signal wiring
SECM (Signal) Pin B15 to ECT Pin 3
SECM (Sensor GND) Pin B1 to ECT Pin 1
SECM (System GND) Pin A16, B17
Check regulator for coolant leaks
171
ECT_IR_Fault
Engine coolant temperature
not changing as expected
None
Check for coolant system problems, e.g.
defective or stuck thermostat
181
FuelSelectConflict
Conflict in fuel select signals,
normally set if both of the fuel
select signals are shorted to
ground
TurnOnMil
Check fuel select switch connection for a
short to GND
SECM (SIGNAL) Pin A12
SECM (SIGNAL) Pin A15
SECM (Sensor GND) Pin B1
191
CamEdgesFault
No CAM signal when engine is
known to be rotating, broken
crankshaft sensor leads or
defective CAM sensor
None
Check CAM sensor connections
SECM (SIGNAL) Pin B10 to CAM sensor
Pin 2
SECM (Sensor GND) Pin B1 to CAM
sensor Pin 3
Switched 12V to CAM sensor Pin 1
Check for defective CAM sensor
192
CamSyncFault
Loss of synchronization on the
CAM sensor, normally due to
noise on the signal or an
intermittent connection on the
CAM sensor
None
Check CAM sensor connections
SECM (SIGNAL) Pin B10 to CAM sensor
Pin 2
SECM (Sensor GND) Pin B1 to CAM
sensor Pin 3
Switched 12V to CAM sensor Pin 1
Check for defective CAM sensor
193
CrankEdgesFault
No crankshaft signal when
engine is known to be rotating,
broken crankshaft sensor
leads or defective crank
sensor
None
Check Crankshaft sensor connections
SECM (SIGNAL) Pin B5 to Crank sensor
Pin 3
SECM (Sensor GND) PIN B1 to Crank
sensor Pin 2
Switched 12V to Crank sensor Pin 1
Check for defective Crank sensor
194
CrankSyncFault
Loss of synchronization on the
crankshaft sensor, normally
due to noise on the signal or
an intermittent connection on
the crankshaft sensor
None
Check Crankshaft sensor connections
SECM (SIGNAL) Pin B5 to Crank sensor
Pin 3
SECM (Sensor GND) Pin B1 to Crank
sensor Pin 2
Switched 12V to Crank sensor Pin 1
Check for defective Crank sensor
(*) Fault actions shown are default values specified by the OEM.
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